Well i'm almost there. Got each axis running when mapped and connected individually one each to on-board, and off-board driver. When I map both axis to off board drivers, i get odd behaviour from one axis. Calling it a night for now, as one of the off board driver carriers blew the voltage regulator, through plugging in an old blown driver (4988), it happens when tired. The odd axis behaviour might be down to how I was grounding both carrier boards (as per manuf' instruction), and sods law just when I'm about to eliminate that concern with separate ground wires, the magic smoke escapes.
It didn't help that I had a whole pack of faulty 8825 drivers throwing me off track, maybe the plane from China took a lightning hit
The intention is for a relatively straight forward documented method of circumventing the 4988 related print quality issues once and for all, whilst retaining the original board. From where this "idea" was a few days ago, it has come along pretty far. Of course the other option is that 2.1.5 board fitted out with TMC drivers. I have one on order. Certainly the off board driver carrier approach is being a lot more hassle but once finalized, some documentation will make it pretty straight forward. at least thats the plan.
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cjs
The Duet3D board doesn't have the issue! One reason are the newer, more advanced, stepper drivers @nilrog mentioned. Wonder why ultimaker still doesn't set the a4988 to low-current microst
halfie
I'm using the aliexpress 2.1.5 board at the moment, and it's working just fine. What I did was change the MS1, MS2 and MS3 microswitches to OFF/OFF/OFF, to make the board full step, and t
Ronan
Surprise Ultimaker doesn't have those incorporated in their UM3...
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neotko 1,417
Actually the plug looks the same, but no, isn't possible. Well, better put, noone made the code. It's 'doable' but only if the controller is very basic since some of that pins are using also for internal stuff on the duet3d (there's some chats about that on their forum) ultimately, I though that I would miss the panel, but not at all, I use all my printers 3 with the phone, send the jobs from the computer and do the file selection, baby stepping for z addjustments, preheat, everything from the www phone, works like a charm.
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halfie 8
That's what I figured. I'm planning to splice in a Raspberry pi 3 soonish, and run it from the phone as well, it seems like a great way to keep an eye on things while I'm at work.
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neotko 1,417
There's no need IMO for that... It just works different. You set the Z height, then move near the possition and ajust the Tool offset to mimic a calibration. OFC it doesn't have fancy menus. I did get use to that, is very fast to change a configuration, since it's just a text file, you hit reboot and you change everything (not like marlin that need's a total firmware update for some stuff).
Anyhow, indeed, nobody made a assisted calibration, since the duet3d supports practically all the bed calibration addons on the market. Ofc I also don't use any XD
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